Turbine wheel



P. J. MAHER TURBINE WHEEL Oct. 6', 1925- Filed Nov. 11, 24

INVENTOR $174010]: M

WXTNESSES ATTORNEYS Patented Oct. 6, 1925.

. UNITED. STATE rumor: J. MAKER, or-ivnw YORK, N. Y.

TURBINE WHEEL.

. Toall'whom it may concern:

Be it known that I, PATRICK J. Manna. a citizen of Ireland, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented new and Improved Turbine Wheel, of which the following is a full, clear, and exact description.

This invention relates to a turbine wheel. An object of the invention is to provide a new and improved construction whereby the blades can be simply and easily attached to the periphery of a wheel to forma plurality or series of buckets to receive the impelling fluid.

Another object concerns the provision of simple and efiicient means whereby the blades are made of material that is strong and durable and yet can be economically manufactured and readily assembled in their co-operative relation.

A further ob'ect concerns the provision of simple and efficient means whereby the blades are permanently held in their proper relation with a minimum liability of becoming deranged during the operation of the wheel.

The invention is illustrated in the drawings, of which Figure 1 is a side elevation of the turbine;

Fig. 2 is a vertical section taken through the shaft of the turbine showing the casing removed and the blade in side elevation;

Fig. 3 is a section taken on the line 33 of Fig. 4;

Fig. 4 is a perspective view of one of the blades; and

Fig. 5 is an enlarged sectional view taken through certain of the blades.

The form of the invention shown in the drawings is a preferred form, although it is understood that modifications in the constructionand arrangement of the parts and in the character of the materials used may be adopted without departing from the spirit of the invention as set forth in the appended claims.

In general the invention concerns a simple and eflicient form of blade that can be simply, economically and efficiently attached to the periphery of any wheel to convert it into a turbine wheel. Preferably, the blades are made of sheet steel or similar material and adapted to partially embrace the periphery of the wheel so that there is formd between the periphery of the Wheel Application-filed November, 11, 1924. Serial No. 749,249.

and the blade a chamber into which the impelling fluid is projected: torotatetheawheel. Each blade. is provided; with bent, portions adapted to partially embrace shoulders on the'edges of the periphery of the wheel-and to be suitably pinned or fastened thereto, the forward and rear edges of the blade being provided with shoulder portions adapted to interlock with similar portions on the adjacent blades so that the blades are held firmly in their co-opera-tive relation. By reason of the fact that the blades are made of sheet metal they can be economically formed, and by reason of their construction they can be fastened to the periphery of the wheel with a minimum expenditure ,of time and labor and yet be fastened permanently and firmly so that they are not liable to become disarranged during the operation of the wheel.

As shown in the drawings, the preferred form of the invention includes a casing 1 in which a shaft 2 is mounted. This shaft carries a wheel 3 the periphery 4 of which is provided along each edge with shoulders 5 and 6 against which portions of the blades are adapted to bear.

The blades, as shown in the figures, comprise plates 7- of sheet material curved to form buckets. At the rear end of each blade are provided apertures 8 and 9 through which pins 10 are adapted to project, these pins extending through the periphery of the wheel to fasten the blades thereto. At'the forward and rear edges of the blades they are cut away, as at 11 and 12, on each side thereof to form shoulders, the rear portion being undercut and the forward portion being overcut. These cut portions of the blades, as shown in the drawings, are adapted to interlock with similar cut portions on the adjacent blades. As shown in Fig. 2, the undercut rear portion of one blade will interlock with the overcut forward portion of the blade immediately to the rear thereof, whereas the overcut forward portion of the particular blade will interlock with the undercut rear portion of the blade immediately in advance thereof. Therefore, the blades are held in their co-operative relation, first, by assembling them on the wheel in their interlocked relation, and then pinning each blade to the wheel by means of the pins 10. The curvature of the surfaces of the blades is such that the wall of the la e a n ide able d stance from the periphery of the wheel at its rear end and then slopes downwardly and forwardly until at its forward end it lies fiat against the periphery of the wheel, thus forming a bucket or chamber into which the impelling fluid is projected from pipes such as 13 and 14. The casing is provided with an outlet pipe 15.

What I claim is 1. In combination, a turbine wheel having peripheral shoulders along its edges, curved blades having their edges resting on said shoulders, pins extending through the blades and the periphery of the wheel to 15 fasten the blades thereto, the forward and rear edges of each blade being cut to provide shoulders which interlock with corresponding portions of the adjacent blades.

2. In combination, a Wheel having shoulders on its periphery, curved sheet metal blades disposed against the periphery of the wheel with their lower edges bearing on the shoulders, said wheel on its periphery and the blades having apertures to be aligned, and pins extending through said apertures, the rear edge of each blade being undercut and the forward edge being overcut to interlock with similar cut portions on the adjacent blades.

PATRICK J. MAHER. 

